Issue 49

Yu. Bayandin et alii, Frattura ed Integrità Strutturale, 49 (2019) 243-256; DOI: 10.3221/IGF-ESIS.49.24 253 initial material structure. As the consequence, the elastic decay dynamics could be sensitive to the qualitative different relaxation kinetics: exponential kinetics with characteristic times that are close to the acoustic times and intermittent “slow” relaxation leading to the power law plastic wave fronts. Figure 8: Dependences of the stress amplitude versus the strain rate at the shock front for metals Figure 9: Dependences of the amplitude of stresses versus the strain rate at the front of the shock wave for nonmetals 10 5 10 6 10 7 10 0 10 1 d  /dt, s -1  A , GPa Fe [2] Cu [2] Al [2] Al simulation [31] d  /dt~  A 4 10 5 10 6 10 7 10 0 10 1 d  /dt, s -1  A , GPa MgO [2] SiO 2 [2] SiC simulation SiC experiment [15] d  /dt~  A 4